I’m helping my 12 yo put together his first big game rifle and am hoping one of you may know what height rings we need. He’s getting a Ruger American g2 in 6.5 CM and a Burris Fullfield II 3-9x40. I’ve read good things about Sportsmatch rings here, so that combined with the price made that choice easy. I’d like to keep the scope as low as possible, but the 2 piece low rings specify up to 32mm objective. It looks like the rail on the rifle is 6” long, so I’m wondering if the objective would clear the rail and allow space without hitting the barrel? I can order low and medium height and then return whichever we don’t use, but would like to avoid the hassle if anyone here knows the answer. Thanks in advance for any help!